Pump



July 3,. 3.923.

D. H. TI-iGMPSON PUMP i. 1921 5 Sheets-Sheet 1 Filed April Juiy 3, 1923.

D. H. THOMPSON PUMP . 1.921 3 Sheets-Sheet 2 Fi led April July 3, 1923.

D. H. THOMPSON PUMP Z5 Sheets-Sheet (5 Filed April 4, 1921 259M917 Zi0.2

Wavy/$022.

D HARPER THOMPSON, F LODI, CALIFORNIA.

PUMP.

Application flied April 1921. Serial Ito. 653,270.

Ta on whom it concern:

Be it known that T, DEAN HARPER THOMrsort, a citizen of the UnitedStates, and reardent of Lodi, county of San Joa um and State ofCalifornia, have invente a new and useful Pump, of which the followingis a s ecification.

he present invention relates to improve ments in umps and its object isto provide a positive acting, continuously operating, combined suctionand pressure pump having a continuous suction and discharge that iseconomical, simple and substantlally built.

I accomplish this object bymeans of the mechanism illustrated in theaccompanying drawing, in which Figure 1 represents a 1ongitudinalvertical section through my pump, Figure 2 a horizontal section throughthe same, substantially along line 22 of Figure 4, Pi re 3 an insideview of one of two rotary w eels used in my pump, Figure a a transversevertical section along line 4-4 of Figure 1, Figure 5 a side view of thepump with a cover and a rotating wheel removed, andFigure 6 aperspective view of one of the rotary wheels of my pump.

Referrin to the drawings more art1cularly it wil be seen that thehouslng (1) supports in two roller bearings (2) the shaft (3), which isrotated byI means of any su1table power actuating t e pulley (4). Thehousing consists of a ri id central part (6) rovided with two circu arparallel faces or anges (7 and two covers (8), the flanges (9) of whichare bolted to the clrcular parallel faces or flanges (7) of the housingas shown at (11). Inside of the covers (8) the shaft carries twosymmetrical rotary disks or wheels (12), one on either side of theparallel flanged faces of the housing. These two disks or wheels arekeyed to the shaft so as to rotate with the same and are firmly pressedagainst the parallel flanged faces of the housing by means of two largenuts (14) engaging threaded parts (16) of the shaft. Ball-thrustbearings (17) are rovided to reduce the friction between the disks orwheels and the central part of the housing, and packing rings (18) serveto prevent any air or liquid from leaking through between the disks orwheels and the parallel faces of the'housing, springs (19) tending togive a certain elasticity to said packing rings.

The two disks or wheels (12), shown particularly well in Figures 1, 2, 3and 6, are

of solid cross-section but have, on their inner surfaces, pockets orchambers (23) out into the same, two bounding surfaces (20) of which aresemi-circular in outline and concentric with the axis, while the twoother bounding surfaces (22) are in radial planes and sloping incross-section. They are arranged on the shaft in such a manner thattheir inner faces run parallel and that at all times the semi-circularchamber or pocket in one disk or wheel is op osite the solid portion ofthe opposite dis or wheel and vice versa and are designed to alternatelyregister with the openings (25) through the parallel flanged faces ofthe housing which terminate into the suction and discharge openings (26)and (27).

It will be seen that the central part of the housing, which may becalled the stator of my pump, provides inside space only above the shaft(3), the lower part consisting of supports only. This inside space isprovided with the inlet pipe (26) and the discharge pipe (27), the twopipes being arranged opposite of each other and being separated fromeach other by a movable partition or plunger (28) extendinlongitudinally through the stator and dividing its inside s ace into twocompartments (29.) and (31?. This movable partition or p unger (28) iscomposed of a series of plates (32) lying flat against each other. Thetwo outside plates are solid, while all the inner plates are perforatedin such a manner that none of the perforations register with those ofthe adjoining plates. These perforations serve as carriers of greaseadmitted between the plates through the grease cup (30) and tend toreduce the friction between the plates by reducing the area of surfacesin contact. These plates, as shown in Figure 4, are held in place by twoupper guides (33) and two lower guides (34:) and are capable oflongitudinal movement only. Longitudinally they extend from the insideface of one (115k on wheel to the face of the solid portion of theopposite.disk or wheel and, since the distance between the two facesremains constant throughout the rotation, the movable partition orplunger will always maintain a liquid or air-tight connection with thefaces of the disks or wheels. Likewise, since the to and bottom surfacesof the movable partition or plunger come in direct contact with thehorizontal surfaces of the semicircular chamber or pockets it will beseen that no air or liquid can pass the movable partition or-plunger ineither direction at any the disks or whee s.

Having thus described the essential features, elements, and theco-rel-ationstherebetween, like reference characters being utilized toindicate similar features and ele- .or wheel, and as will be observments throughout, the operation of the pump is set forth as follows:

Since the movable partition or plunger (28) is of a length equal to thedistance between the inner face of the semicircular chamber (23) in oneof the disks or wheels (12) and the solid face of the o posite disk edthe radial sides (22) of these chambers present an inclined surface tothe ends of the movable.

opposite side, it will be clearly evident that the tendency to create avacuum between the receding end of the semi-circular chamber and themovable partition or plunger will cause that chamber to become filledwith air or liquid through .the openings in the parallel faces (7) ofthe housing (6) leading to the chamber (29) and the suction pipe (26),while the approaching end of the same semi-circular chamber on the oposite side of the movable partition or p unger will 'empt the chamberof its contents (with WhlC it was filled on the preceding revolu'tion)by forcing it outthrough the openingin the parallel face (7) of thehousing (6) into the chamber (31) and the discharge pipe (27). Thus thesemi-circular chambers in each disk or wheel will be fillin andemptyiltig simultaneously in each revo ution an as is operation takesplace alternately it will be clearly evident that the action of the pumpwill be continuous both in suction as well as discharge and since thisaction is positive in nature, the ca acity of the pump as well as thepressure w ich it exerts upon the discharging contents will becontingent only upon the speed at which the pump is. driven or the powerexerted in operating.

I claim:

1. In a pump, a housing having a shaft rotatably mounted therein, twowheels haveriod of the rotation of,

'dinally divided into a plurality of ing inwardly facing chambers ofsemi-circular c'ontour and sloping radial sides keyed to said shaft sothat their inner surfaces are arallel, and a partition sup rted in saidousing extending between said two wheels, said partition beinglongitudinally divided into sheets movable independently of each other,and an inlet and a discharge arranged on o posite sides of saidpartition.

2. n a pump, a housing havingashaft rotatably mounted therein, twowheels having inwardly facing chambers of semi-circular contour andslopin radial sides keyed to said shaft so that t eir inner surfaces areparallel, and a partition sup rted in said housing extendin between saidtwo wheels, said partition being longitudinally divided into a pluralityof sheets movable independently of each other, the two outside sheetsbeing solid, the inside sheets being perforated and an inlet and adischarge arranged on opposite sides of said partition.

3. In a pump, a housing having a shaft rotatably mounted therein, twowheels having inwardly facing chambers of semi-circular contour andsloping radial sides keyed to said shaft so that their inner surfacesare parallel, and a partition supported in saidhousing extending:between said two wheels, said partition being longitudinally dividedinto a plurality of sheets movable 1ndependently of. each other, the twooutside sheets being solid, the inside sheets being perforated, saidperforations being adapted to receive and to distribute a lubricantbetween the several sheets.

4. In a pump, in means for providing a stationary liquid-and air-tightconnection between two rotating wheels having rallel. but unevensurfaces, a partition ongitudinally divided into a lurality of sheetsmovable independently 0 each other.

5. In a pump, in means fog providin a stationary liquidand air-tightconnection between tworotati-ng wheels havin parallel, but unevensurfaces, a partition Io sheets movable inde ndently of each other, thetwo outside s eets being solid, the inside sheets being perforated.

6.. In a pump inmeans for pmvidin a ngitu-' stationary liquidandair-tight connection between two rotating wheels havin parallel, butuneven surfaces, a partition longitw dinally divided" into a pluralityof sheets movable independently of each other, the

two outside sheets being solid, the inside sheets being perforated, saidperforations being adaptid to receive and todistribute a lubricantweenthe several sheets.

H ARPER THOMPSON.

